Comparing the Validity of Self-Report and Urinalysis for Substance Use among Former Inmates in the Northeastern United States: Substance Use Reporting Accuracy Among Inmates

Jacob J. van den Berg, Samuel Adeyemo, Mary B. Roberts, Beth C. Bock, L. A.R. Stein, Rosemarie A. Martin, Donna R. Parker, Jennifer G. Clarke

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Problems with self-reported drug use include difficulties with recall and recognition as well as the desire to respond to questions in a socially desirable manner. Various methods have been developed to improve and/or validate estimates based on direct questioning of individuals regarding their substance use. For this study, we were interested in validating self-reported use of: 1) tobacco, 2) marijuana, and 3) other substances (i.e., heroin, cocaine, opiates, oxycodone, benzodiazepines, methamphetamine, phencyclidine, and barbiturates) employing urinalysis among inmates who participated in a randomized controlled trial of a smoking abstinence intervention in a tobacco-free prison located in the northeastern United States. Methods: Two-hundred and seven men and women with a mean age of 34.9 (standard deviation = 9.0) completed questions regarding their substance use on a 7-day Timeline Follow-Back and provided urine specimens three weeks following prison release. Results: Self-reported tobacco and marijuana use were highly consistent with urine drug testing in terms of overall agreement and Kappa (93.7% and.804 for tobacco, respectively; and 90.3% and.804 for marijuana, respectively); however, consistency was much lower for other drug use grouped together (62.7% and.270). Discussion: Although some former inmates may not accurately report substance use, our findings indicate that they are in the minority, suggesting that self-report is valid for tobacco and marijuana use but much less so for other drugs grouped together. Future research should be conducted with a larger and more diverse sample of former inmates to establish the generalizability of our findings from this study.

Original languageEnglish (US)
Pages (from-to)1756-1761
Number of pages6
JournalSubstance Use and Misuse
Volume53
Issue number10
DOIs
StatePublished - Aug 24 2018
Externally publishedYes

Keywords

  • Substance use
  • accuracy
  • former inmates
  • self-report
  • timeline follow-back
  • urinalysis
  • validity

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Health(social science)
  • Public Health, Environmental and Occupational Health
  • Psychiatry and Mental health

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